DIGI_OUTPUT_FLOW_CONTROL_XON_XOFF 829 drivers/usb/serial/digi_acceleport.c arg |= DIGI_OUTPUT_FLOW_CONTROL_XON_XOFF; DIGI_OUTPUT_FLOW_CONTROL_XON_XOFF 831 drivers/usb/serial/digi_acceleport.c arg &= ~DIGI_OUTPUT_FLOW_CONTROL_XON_XOFF;